Sorry... This plugin is not maintained anymore... :(

This WordPress plugin allows Wordpres users to deposit and withdraw bitcoin.

It makes a WordPress instance function as a bank, and can be used as a foundation to create banking and financial software in WordPress.

• User interface
• API
• Security

The plugin provides a number of shortcodes that can be used to create the user experience on the frontend of the WordPress site. The shortcodes are:

• [bca-balance] - Show the current balance for the currently logged in user.
• [bca-deposit] - Show an interface, including a QR-code, for the user to deposit funds into the account.
• [bca-history] - Show the account history for the current user.
• [bca-withdraw] - Show an interface that lets the current user withdraw funds to an external Bitcoin address.

The look and feel of the user interface is further tweakable using CSS.

There is an API for other plugins to take advangage of the accounting functionality. The functions exposed through this API are:

• bca_get_user_account($user)
  Get a reference to an Account object for the user specified by $user. The $user parameter can be either a user id or a WordPress User object.
• bca_entity_account($entity_type, $entity_id)
  Get a reference to an Account object for the specified entity type, with the specified entity id. There is no fixed set of entity types, and the $entity_type is just a plain string.
• bca_make_transaction($denomination, $fromAccount, $toAccount, $amount, $options)
  Move the specified amount from the fromAccount to the toAccount. The accounts should be specified using Account objects returned by the functions above. The $denomination parameter is a string, and should ba any of btc, mbtc or satoshi. The $options parameter is optional, and may contain the following fields:
  • notice - Specify the text to appear next to the transation in the account history.
  • confirming - If this is set to true, it allows moving funds from accounts that have unconfirmed transactions. Use with caution!

So, if the WordPress site is hacked, all the Bitcoins will be stolen, right? Actually not, since no private keys is stored on the system. As a user withdraws funds, the Bitcoins will not be moved directly. Rather, a transaction will be stored in the database. There is then a REST api that can be used to actually perform the transactions, and the REST api takes the private key as input.